| /* |
| * Copyright (C) 2012 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.android.gallery3d.filtershow.imageshow; |
| |
| import android.content.Context; |
| import android.graphics.Bitmap; |
| import android.graphics.Canvas; |
| import android.graphics.Paint; |
| import android.graphics.RectF; |
| import android.util.AttributeSet; |
| |
| import com.android.gallery3d.R; |
| import com.android.gallery3d.filtershow.editors.EditorFlip; |
| import com.android.gallery3d.filtershow.imageshow.GeometryMetadata.FLIP; |
| |
| public class ImageFlip extends ImageGeometry { |
| |
| private static final Paint gPaint = new Paint(); |
| private static final float MIN_FLICK_DIST_FOR_FLIP = 0.1f; |
| private static final String LOGTAG = "ImageFlip"; |
| private FLIP mNextFlip = FLIP.NONE; |
| private EditorFlip mEditorFlip; |
| |
| public ImageFlip(Context context, AttributeSet attrs) { |
| super(context, attrs); |
| } |
| |
| public ImageFlip(Context context) { |
| super(context); |
| } |
| |
| @Override |
| public String getName() { |
| return getContext().getString(R.string.mirror); |
| } |
| |
| @Override |
| protected void setActionDown(float x, float y) { |
| super.setActionDown(x, y); |
| } |
| |
| boolean hasRotated90(){ |
| int rot = constrainedRotation(getLocalRotation()); |
| return (rot / 90) % 2 != 0; |
| } |
| |
| public void flip() { |
| FLIP flip = getLocalFlip(); |
| boolean next = true; |
| // Picks next flip in order from enum FLIP (wrapping) |
| for (FLIP f : FLIP.values()) { |
| if (next) { |
| mNextFlip = f; |
| next = false; |
| } |
| if (f.equals(flip)) { |
| next = true; |
| } |
| } |
| setLocalFlip(mNextFlip); |
| } |
| |
| @Override |
| protected void setActionMove(float x, float y) { |
| super.setActionMove(x, y); |
| |
| float diffx = mTouchCenterX - x; |
| float diffy = mTouchCenterY - y; |
| float flick = getScaledMinFlick(); |
| if(hasRotated90()){ |
| float temp = diffx; |
| diffx = diffy; |
| diffy = temp; |
| } |
| if (Math.abs(diffx) >= flick) { |
| // flick moving left/right |
| FLIP flip = getLocalFlip(); |
| switch (flip) { |
| case NONE: |
| flip = FLIP.HORIZONTAL; |
| break; |
| case HORIZONTAL: |
| flip = FLIP.NONE; |
| break; |
| case VERTICAL: |
| flip = FLIP.BOTH; |
| break; |
| case BOTH: |
| flip = FLIP.VERTICAL; |
| break; |
| default: |
| flip = FLIP.NONE; |
| break; |
| } |
| mNextFlip = flip; |
| } |
| if (Math.abs(diffy) >= flick) { |
| // flick moving up/down |
| FLIP flip = getLocalFlip(); |
| switch (flip) { |
| case NONE: |
| flip = FLIP.VERTICAL; |
| break; |
| case VERTICAL: |
| flip = FLIP.NONE; |
| break; |
| case HORIZONTAL: |
| flip = FLIP.BOTH; |
| break; |
| case BOTH: |
| flip = FLIP.HORIZONTAL; |
| break; |
| default: |
| flip = FLIP.NONE; |
| break; |
| } |
| mNextFlip = flip; |
| } |
| } |
| |
| @Override |
| protected void setActionUp() { |
| super.setActionUp(); |
| setLocalFlip(mNextFlip); |
| } |
| |
| @Override |
| public void resetParameter() { |
| super.resetParameter(); |
| mNextFlip = FLIP.NONE; |
| } |
| |
| private float getScaledMinFlick() { |
| RectF disp = getLocalDisplayBounds(); |
| float scaled = Math.min(disp.width(), disp.height()) * MIN_FLICK_DIST_FOR_FLIP |
| / getLocalScale(); |
| return scaled; |
| } |
| |
| @Override |
| protected void drawShape(Canvas canvas, Bitmap image) { |
| gPaint.setAntiAlias(true); |
| gPaint.setARGB(255, 255, 255, 255); |
| drawTransformedCropped(canvas, image, gPaint); |
| } |
| |
| public void setEditor(EditorFlip editorFlip) { |
| mEditorFlip = editorFlip; |
| } |
| |
| } |